期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 10, 期 4, 页码 1644-1652出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.1c07532
关键词
in situ biosynthesis; bacterial cellulose; air filtration; biodegradable
资金
- program for Science and Technology Innovative Research Team in Universities of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, China)
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center (Changzhou University)
- National Natural Science Foundation of China [51803092, 51873087]
- Natural Science Foundation of China Jiangsu Province [BK20180490]
- Fundamental Research Funds for the Central Universities [30920130121001]
Researchers have modified bacterial cellulose into N-acetyl bacterial cellulose and used it as filters for the removal of particulate matter. The modified filters show higher removal efficiency than pristine bacterial cellulose filters and exhibit favorable biodegradability in a real soil environment.
Air pollution has caused serious public health concerns and attracted much attention of researchers, especially those working on sustainable and environmentally friendly polymers. In this work, we modified bacterial cellulose (BC) into N-acetyl BC (AcNBC) in an in situ manner and put it to use as filters for the removal of particulate matter (PM) particles. The structure and the morphology of BC-based materials were investigated by C NMR, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Through the observation of its microscopic morphology, we find that the nanoscale fiber diameter and the three-dimensional structure are almost impervious to the introduction of acetyl. The result of quantified PM removal by an AcNBC filter shows a higher removal of PM than that by pristine BC and meets the qualification of the 95% high-efficiency standard under high-concentration PM particles. Moreover, the BC-based filters after filtration showed favorable biodegradation in a real soil environment. These results suggest that BC-based materials can be effective candidate filters for the removal of polluted air, resulting in a healthier living environment.
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